Max ams



(No Model.)

M. AMS. METHOD OF MAKING LINED CANS.

No. 426,091. Patented Apr. 22, 1890.

J L 74 I L.

FIE/5 WITNESSES INVENTEIR we mmms wrrzns co PHBTo-umu, WASHINOYDN, a. a.

UNITED STATES PATENT OEEIcE.

MAX AMS, OF NE YORK, N. Y.

METHOD OF MAKING LINED CANS.

SPECIFICATION forming part of Letters Patent No. 426,091, dated April 22, 1890.

(No model.)

To all whom it may concern.-

Be it known that I, MAX Ans, of New York city, New York, have invented an Improved Method. of Making Lined Cans, of which the following is a specification.

This invention relates to an improved method of covering the interior of tin cans with varnish in such a manner that the overlapping parts of the can may be freely soldered upon. one another.

The invention consists in the various features of improvement more fully pointed out in the claims.

In the accompanying drawings, Figure 1 is a plan view of a blank for three can-bodies. Fig. 2 is a similar view of the head-blank; Fig. 3, a vertical central section of the completed can. Figs. t to 6 are corresponding views of a modification.

In carrying out myinvention Iapply to one side of a straight sheet of tin a, preferably by means of a stencil, a series of rectangular coatings of varnish I). These rectangular coatings or figures reach at one end to the edge of the tin; but at the other edge a free margin a should be left, so also free margins or spaces (t should be left between the several figures b. The varnish employed should be of such a consistency that it will not run into the margins while still moist.

I prefer to use a varnish composed of the following ingredients: Two ounces of sandarae, one once of mastic, one-half pint of alcohol, twenty drops of glyccrine, and perhaps a little coloring-matter.

After the varnish has been applied the sheet a is put into a heated room and baked under a temperature of 200 to 500 Fahrenheit, for a period of from thirteen to sixteen hours. Next, the sheet is cut up through the center of the several margins a to form the several can-bod y blanksof'. Each blank is then bent into cylindrical form and soldered. The solder is applied between the margin to and the outer face of the can everlapped by such margin.

The can-heads are made from a blank 0, upon which the circular figures (l of varnish are formed. The sheetis then likewise baked and the circular figures are stamped out and flan god to form the heads (Z Next, the heads are slipped into the ends of the can-body and soldered in place. The solder is applied between the outer face of the cover-flanges and the flanges a of the body, when the can will be completed.

In Figs. at to 6 covers are used that are slipped over the ends of the ean-body in lieu of being inserted into the same. In this case the flanges a of the can-body are replaced by flanges d around the eairheads. The solder is applied between the outer face of the can body and the inner face of the flanges d.

It will be seen that by myimproved method the margin that is to receive the solder is not at any time covered with varnish, and that the varnish need not be removed by scraping or otherwise. Thus I am enabled to produce a perfect can, in which the varnish reaches precisely up to but not beyond the overlapping line.

It is of great importance that the entire inner surface of the can be covered uniformly and without any free specs of metal whatsoever, as the can is designed for the reception of goods-sucl1 as lobsters-that would discolor and spoil when in contact with the metal. By my improvement I obtain this result, while in all cases where the varnish must be removed along the edges no clean outline is attainable; but, on the contrary, free specs of metal will be formed and solder will run into the can.

What I claim is-- 1. The method of making lined cans, which consists in forming rectangular figures of non-flowing varnish upon one side of a sheet of metal, leaving a free margin (1, along one edge, baking the sheet, cutting out and bendin g the bodies into shape, soldering the margin upon the outer face of the can-body, and then securing the varnished and baked heads to the body, substantially as specified.

2. The method of: making lined cans, which consists in forming rectangular figures b of a non-flowing varnish upon one side of a sheet of metal, with a free margin a along one edge and margins 11? between the figures,baking the sheet, cutting out and bending the bodies into shape, soldering the margin a upon the outer face of the can-body, and then securing the flanged and varnished heads to the margins a substantially as specified.

3. The method of making lined cans, Which consists in forming upon one side of a sheet of metal rectangular figures of non-flowing varnish, composed of sandarac, mastic, alcohol, and glycerine, by a stencil, so as to leave a margin a along one edge of such figures, baking, cutting, and bending the bodies into 10 shape, and then soldering the heads, substantially as specified.

MAX AMS. Witnesses:

F. v. BRIESEN, A. J OHNGHMANS. 

